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Finding the Fourth Proportional to 365.40, 504.41 and 215.98

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Solution

The fourth proportional to 365.40, 504.41 and 215.98 is: 298.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.40 : 504.41 = 215.98 : x
  2. Step 2: Convert to fraction form
    365.40/504.41 = 215.98/x
  3. Step 3: Cross multiply
    365.40x = 504.41 × 215.98
  4. Step 4: Simplify right side
    365.40x = 108,943.01
  5. Step 5: Solve for x
    x = 108,943.01/365.40
  6. Step 6: Final answer
    x = 298.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.